I'm so sorry but the settings in poser and shown by phtoshop from Igohigh some posts back and the arguments from Cyogeem just above are completely rubbish. As long as you set a 640 x 480 pixels render area its completely equal what DPI you set. You get everytime a 640 x 480 pixels output. DPI first comes into play if you want to output these pixels to paper or what else which is measured in inches or cm or else.

You seems to simple to understand that DPI or PPI is nothing absolute or ownstanding. It is only the bridge or relation between square pixels on one hand and a in real values measured paper or something else. Nothing more and nothing less.

If you want to understand that truely I suggest that you search in photographing forums for DPI and you find lots like you but also real professionell photographers which are declaring what is declared here around in several aspects.

#igohigh: I'm truely astonished about what you have written abaout printer people opposite computer people. You should remember that your beloved printers are able to do high quality output first since those computer people gave them a lot of electronic life. And I'm truely mostly astonished about your discussion cause I was absolutely in the opinion that a printing instructor should knows all about these above stuff to be good in his profession. Ok, sometime I can lay wrong ... I see. So be happy with your opinions further on ... if correct or not ...

But just for some others may be interested and not such simple as you: I'm since 40 years in that hobby business first with photografics and then also with rendering since their first moments. And that all with poster sizes as also with small handhelds on monitors, simple papers, photographic papers and seeing throug materials. So never again come around with your personel completely unproofen assumptions ...